Hands up if you knew this trivia about it
Regards Neilfrom http://www.triumphspitfire.com/Trivia.html
In the early 60's, the aircraft company Vickers/Supermarine wanted to use the Vanguard name for one of its passenger aircraft. They said in exchange they would allow Standard-Triumph to use the name of one of their aircraft. Standard-Triumph picked Spitfire.